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Jonathan Curtis Youngbear, 20, is charged with first-degree murder in the death of Severn Jefferson, 17.

Court documents state that Youngbear had an argument with Jefferson after they, along with other people, had been drinking and smoking meth over a period of a day and a half.

A witness told police Youngbear came behind Jefferson while he was sitting on the couch and put his finger up to his mouth to indicate to the witness to keep quiet then grabbed a knife and stabbed Jefferson in the chest.

Youngbear was taken into custody early Tuesday morning and is being held at the Tama County Jail.

Police responded to 1695 340th Street after receiving a 911 call reporting a stabbing at the home at 4:52 p.m.

Police found Severn Jefferson unresponsive. The DCI said Jefferson appeared to have been stabbed in the chest with a knife.

An autopsy will be conducted at the State Medical Examiner's Office in Ankeny.

This is the second serious crime to happen on the Meskwaki settlement this month. On Feb. 5, Kim and Gordon Lasley, Sr. were found dead in their home. The couple's son, Gordon Lasley Jr, was charged with two counts of first-degree murder.

Authorities said the two crimes are not connected. They believe this crime is an isolated incident.